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U-Can-Do 3d 46?

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U-Can-Do 3d 46?

Old 06-10-2003, 02:07 PM
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Default RE: U-Can-Do 3d 46?

Anyone besides me notice they pinned the landing gear block in on the 46? Other than a few wrinkles in the covering, this 46 is as good as the first run 60's. I too am planning on using a Saito 100. The 46 with the 100 will be like the 60 sould have been....

Pugs
Old 06-10-2003, 03:55 PM
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Default RE: U-Can-Do 3d 46?

Originally posted by Pugsley
Anyone besides me notice they pinned the landing gear block in on the 46? Other than a few wrinkles in the covering, this 46 is as good as the first run 60's. I too am planning on using a Saito 100. The 46 with the 100 will be like the 60 sould have been....

Pugs
Do you all think that is to much for the plane?

Like way over kill?
Old 06-10-2003, 05:24 PM
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Default RE: U-Can-Do 3d 46?

I don't. The Saito and the OS .70 weigh the same so more power with no weight penalty.

You can never have too much power when dealing with vertical 3D......just my opinion.

Pugs
Old 06-10-2003, 08:45 PM
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Default RE: U-Can-Do 3d 46?

Originally posted by JPBIII
If you mount the engine to the top of the rails(with engine inverted) does this change how the shaft for the prop comes out of the cowling?
I would say most likely it would have to since it is raising the motor by the width of the mount. I wouldn't do this on my plane, I would rather deal with having the tank higher than the motor. It posed no problem on my full size UCD.
Old 06-10-2003, 09:50 PM
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Default RE: U-Can-Do 3d 46?

I think I am going to stick with mounting it the normal way. I will be running a YS 63 so tank position is not a problem.
Old 06-10-2003, 10:57 PM
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Default RE: U-Can-Do 3d 46?

WHAT A NICE PLANE , got my Saito 72 waiting to go in, HS 605's all the way around, was going to go with the HS225BB mighty minis, but got a great deal on 605's

Will fly it this weekend!
Old 06-11-2003, 01:34 AM
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Default RE: U-Can-Do 3d 46?

Hey!! Lets see a picture of that thing?!


Originally posted by earl williams
Everything assembled and ready to fly with saito 100:6lbs even.
It is heavier than advertised becuase I upgraded alot of the equipment: 4-40 rods, ball links on all horns, digital servos, sullivan tail wheel assembly, 1650 Ma battery, heavier duty horns, aluim. sprinner, heavy apc 15x4wide prop, big heavy duty switch, reniforced stab, ect.

Hope to get Saturday an fly it.
Old 06-11-2003, 10:53 AM
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Default RE: U-Can-Do 3d 46?

Does anyone have a flight report yet. specifically, how does it flat spin upright and inverted, Does it do a fairly crisp snap roll. How does it hariier, Does it do a tight waterfall? Can you get a slow high alpha knife edge out of it.
Old 06-12-2003, 06:58 AM
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Default RE: U-Can-Do 3d 46?

U CAN DO 46 with Irvine 53 and battery as far forward as i can get it still needed 3 oz spinner weight plus 8oz of lead to balance
Old 06-12-2003, 01:06 PM
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Default RE: U-Can-Do 3d 46?

Originally posted by GasRookie
U CAN DO 46 with Irvine 53 and battery as far forward as i can get it still needed 3 oz spinner weight plus 8oz of lead to balance
This would mean that to get the ucando to balance one would need a motor that weighs in at 24-28 ounces? That would be one big honkin motor! The OS 70 only weighs 19-20 oz.
Old 06-12-2003, 02:40 PM
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Default RE: U-Can-Do 3d 46?

on RCU about using a Saito 100......didn't look like there was a balance problem. I will be using the same set up.

Pugs
Old 06-12-2003, 08:14 PM
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Default RE: U-Can-Do 3d 46?

Ok HELP I am so puzzled on what to put in this thing with a saito 80 be overkill or just a lill overpowered and would an o.s. 61 fx fit in the ucd 46 bc i think a 50 is to small???????
Old 06-12-2003, 08:51 PM
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Default RE: U-Can-Do 3d 46?

Tuff question. The answer is....it depends. Most people are pefectly happy running the suggested motor. Others feel the need to over power the plane. It all depends on what you plan on doing with the plane, and your flying experience. I plan on using a Saito 100 because it is the same weight as a OS .70 (engine used in the manual), I tend to fly heavy 3D, and I know how to use the left stick. Your mileage may very.

Some on here will say the Saito 100 is way over kill. That is their opinion and good for them. I on the other hand don't really care what others think or say. I have the 100 on hand, and I will be using it. There is already one report that the 100 is awesome on this air frame. I had the 100 on the big UCD and I thought it was lacking in power a tad. But, as I said, that is my opinion.

Now, to your question, I think the 80 is a bit more weight than the 100 due to the older design. I may be wrong, but if I had a choice between the 80 and the 61 FX, I'd go 61 FX. That once again is my opinion.

Take care......

Pugs
Old 06-12-2003, 11:30 PM
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Default RE: U-Can-Do 3d 46?

pugsley my thoughs agree with yours.......
Old 06-12-2003, 11:42 PM
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Default RE: U-Can-Do 3d 46?

I'd like to find out from more owners of this plane which motors are causing the plane to be nose or tail heavy. That is one guideline which will help determine how big to go. If it needs nose weight I'd rather have the weight with an engine that gives reserve power instead of just lead.

If it is nose heavy instead, I would go with a lighter motor and smaller servos which could save 8-10 oz and the smaller motor might be ok considering the weight savings of the smaller radio/motor combo.
Old 06-13-2003, 12:43 AM
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Default RE: U-Can-Do 3d 46?

Also what are the weights that your ending up with, im just wandering whats the smallest engine you can use an still get good performance.

Dan
Old 06-13-2003, 11:07 PM
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Default RE: U-Can-Do 3d 46?

I got the email from Tower today. She's on the way!!!

I'm going with my OS 70 four stroke that has no home at the moment.
Old 06-13-2003, 11:53 PM
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Default RE: U-Can-Do 3d 46?

I just got word from somebody who finished up their UCD46 that with a 50sx the plane balances at about 5.5" with the battery all the way forward. This is the rearward recommended CG from what I understand (my manual isn't handy so can't double check that figure). This means you can put a heavier motor in this without worrying much about having to add tail weight. With the OS 70 around 20 oz w/muffler that should be ok for balance but would like to hear if anybody has tried one yet.

I'm waiting on some items to finish up my review on this for the magazine...I'll try to finish it up asap with as much detail as I can.
Old 06-14-2003, 12:38 AM
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Default RE: U-Can-Do 3d 46?

I picked one up yesterday and I got it finished this evening. I used a saito 100 and five HS5625's. I know the servo's are overkill but I just happened to have them besides they are well used anyway.
With the battery behind the fuel tank it balances right at 5 1/8. All up weight w/o fuel is 6lbs 4oz. You could save weight with lighter servos and battery pack. I used a 1700mah sub-c.
I played around in the yard with it and the tail gets light pretty quick. Might get to fly tomorrow.
Old 06-14-2003, 12:42 AM
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Default RE: U-Can-Do 3d 46?

Here's a pic....
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Old 06-14-2003, 01:49 AM
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Default RE: U-Can-Do 3d 46?

Ok...seems the 5-5.5lb target in the specs it tought to hit. 6lb range seems more likely.
Old 06-14-2003, 02:04 AM
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Default RE: U-Can-Do 3d 46?

I should be ordering one in the next week or so. Plan on using a MVVS 45 on it, any one have any thoughts on power and balance?
Old 06-14-2003, 02:26 AM
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Default RE: U-Can-Do 3d 46?

Originally posted by RCadmin
I just got word from somebody who finished up their UCD46 that with a 50sx the plane balances at about 5.5" with the battery all the way forward.
What size battery? I'm using a 50sx in mine too, and will be using a 6v (5 cell) 1400mah for servo torque.

I would rather not maiden flight with the rear most CG... But that's just me.

Leo
Old 06-14-2003, 02:44 AM
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Default RE: U-Can-Do 3d 46?

He had a 5 cell high capacity nicad up front to get a little extra weight up there. I think it was around the capacity you intend to use (approx 1500mah give or take).
Old 06-14-2003, 04:18 AM
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Default RE: U-Can-Do 3d 46?

Originally posted by RCadmin
He had a 5 cell high capacity nicad up front to get a little extra weight up there.
Thanks! I just realized that there is plenty of room under the fuel tank. This also requires an extension if anyone else plans on trying it.

If someone else tries this to solve the 2 stroke weight problem without adding lead before I get to that point (sometime sunday), let me know.

Leo

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